Science

Why Was the Pyramid of the Sun Built?

This question is at the heart of the biggest mysteries surrounding Teotihuacan's towering monument.
Topics: Sun

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Inside China's plan to field the world's first 2-seat stealth fighter jet

A still image from a music video showing twin-seat version of China's advanced J-20 fighter jet. Aviation Industry Corporation of China/Bilibili China has announced plans to build a new two-seat variant of the J-20 fifth-generation fighter...
Topics: Science Videos

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NASA likely to redo hot-fire test of its Space Launch System core stage

Enlarge / At 4:27pm central time on Saturday, the SLS rocket core stage ignited its four RS-25 engines at NASA's Stennis Space Center. The test was to last up to eight minutes. (credit: Trevor Mahlmann for Ars) Following the unsuccessful...
Topics: NASA, Space

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With latest Starlink launch, SpaceX to set record for rapid reuse

Enlarge / Falcon 9, booster 1051, breaking through the sound barrier on December 13, 2020. It's back for an eighth launch a little more than a month later. (credit: Trevor Mahlmann / Ars Technica) SpaceX is continuing to make strides as it pushes...
Topics: SpaceX, Space

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The magnetic fields swirling within the Whirlpool galaxy

Messier objects are some of the most imaged objects in the universe. In part that's because many of them are so visibly appealing. A good example of that is the Whirlpool galaxy, M51, which recently received an even more dramatic visual...
Topics: Galaxies, Space

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SpaceX Starship SN9 reloads its Raptors ahead of high-altitude flight - CNET

SN9 is on deck to boldly follow in the footsteps of SN8, which bravely sacrificed itself in the name of iteration.
Topics: SpaceX, Space

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The Milky Way does the wave

In results announced this week at the 237th Meeting of the American Astronomical Society, scientists from the Sloan Digital Sky survey present the most detailed look yet at the warp of our own galaxy.
Topics: Milky Way, Space, Polls

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A New Era of Spacecraft Delivers Science On Time

When the Space Shuttle Atlantis rolled to a stop on its final mission in 2011, it was truly the end of an era. Few could deny that the program had become too complex and expensive to keep running, but even still, humanity’s ability to do...
Topics: Spacecrafts, Space Shuttle

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Scientists Study ‘Cotton-Candy’ Exoplanet That Shatters Planet Formation Theories

MOSCOW (Sputnik) - The core mass of the recently discovered giant exoplanet WASP-107b has turned out to be much lower than deemed necessary to trigger massive gas envelope accretion, thus shattering traditional planet formation theories, an article...
Topics: Exoplanets, Space, Scientific Discoveries

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Light-induced twisting of Weyl nodes switches on giant electron current

Scientists at the U.S. Department of Energy's Ames Laboratory and collaborators at Brookhaven National Laboratory and the University of Alabama at Birmingham have discovered a new light-induced switch that twists the crystal lattice of the material,...
Topics: Electrons, Scientific Discoveries

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A ‘super-puff’ planet like no other

The core mass of the giant exoplanet WASP-107b is much lower than what was thought necessary to build up the immense gas envelope surrounding giant planets like Jupiter and Saturn, according to a Canadian-led team of astronomers, including McGill...
Topics: Space, Exoplanets, Jupiter, Saturn

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Multidimensional coherent spectroscopy reveals triplet state coherences in cesium lead-halide...

Advanced optoelectronics require materials with newly engineered characteristics. Examples include a class of materials named metal-halide perovskites that have tremendous significance to form perovskite solar cells with photovoltaic efficiencies....

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A species of previously undiscovered cave bug provides the testimony of an ancient fauna

An international study with the participation of the Natural History Museum (UV) has made the first record of a cave-dwelling Kinnaridae from the Old World. It is Valenciolenda fadaforesta, a species found in Valencian caves and a remnant of an...
Topics: Museum

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Watchdog Agency: Energy Sector Needs to Decrease Methane Emissions

Oil and gas companies are not doing enough to decrease the release of methane gases, a main source of planet-heating emissions, the International Energy Agency (IEA) said in a new report released Monday.  In 2020, the fuel industries emitted about...
Topics: Space

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One-dimensional quantum nanowires fertile ground for Majorana zero modes

One-dimensional quantum 'nanowires' - which have length, but no width or height - provide a unique environment for the formation and detection of a quasiparticle known as a Majorana zero mode, which are their own antimatter particle. A new advance...
Topics: Quantum, Physics, Antimatter

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What Happens to Their Supermassive Black Holes When Galaxies Collide?

What’s better than two gigantic galaxies swirling into one another until they collide?  How about three galaxies swirling into one another until they collide – and they all have supermassive black holes at their core to boot!  Recently, a...
Topics: Black Holes, Galaxies, Space

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SLS Green Run Update

Green Run Update: Data and Inspections Indicate Core Stage in Good Condition "The Space Launch System (SLS) rocket Green Run team has reviewed extensive data and completed preliminary inspections that show the rocket's hardware is in excellent...

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Today I learned bats are trendsetters in tracking tech

Look at this bat’s little backpack! | Image: dulog Bats are elusive little creatures, which makes them the perfect subjects for scientists to try out new animal tracking systems. This is great news for me specifically, because I love both...

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Astronomers detect an outbursting young stellar object

By analyzing datasets from the Palomar Gattini InfraRed survey (PGIR) and NASA's NEOWISE spacecraft, astronomers have identified an outbursting young stellar object (YSO) in the star-forming region NGC 281-W. The study, which reports the finding and...
Topics: Space, Polls, NASA, Spacecrafts

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Story of Mammoth Survival Is in the Soil

Ancient DNA preserved in soil may rewrite what we thought about the Ice Age -- Read more on ScientificAmerican.com
Topics: DNA, Genetics

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